R5F2L3AAANFP#U1 Renesas Electronics America, R5F2L3AAANFP#U1 Datasheet - Page 605

• Manufacturer Part Number: R5F2L3AAANFP#U1
• Description: MCU FLASH 96+4KB 100LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/Lx/3AAr

Specifications of R5F2L3AAANFP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LCD, POR, PWM, Voltage Detect, WDT
• Number Of I /o: 88
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 20x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,
R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group
REJ09B0441-0100 Rev.1.00
Page 568 of 802
26.4.3.1
Data transmission/reception is an operation combining data transmission and reception which were described
earlier. Transmission/reception is started by writing data to the SSTDR register.
When the last transfer clock (the data transfer length can be set from 8 to 16 bits using the SSBR register) rises
or the ORER bit is set to 1 (overrun error) while the TDRE bit is set to 1 (data transferred from registers SSTDR
to SSTRSR), the transmit/receive operation is stopped.
Before switching from transmit mode (TE = 1) or receive mode (RE = 1) to transmit/receive mode (TE = RE =
1), set the TE bit to 0 and RE bit to 0 once. After confirming that the TEND bit is set to 0 (TDRE bit is set to 0
when the last bit of the transmit data is transmitted), the RDRF bit is set to 0 (no data in the SSRDR register),
and the ORER bit is set to 0 (no overrun error), set bits TE and RE to 1.
Figure 26.9 shows a Sample Flowchart of Data Transmission/Reception (Clock Synchronous Communication
Mode).
When exiting transmit/receive mode after this mode is used (TE = RE = 1), a clock may be output if
transmit/receive mode is exited after reading the SSRDR register. To avoid any clock outputs, perform either of
the following:
- First set the RE bit to 0, and then set the TE bit to 0.
- Set bits TE and RE at the same time.
When subsequently switching to receive mode (TE = 0 and RE = 1), first set the SRES bit to 1, and set this bit
to 0 to reset the SSU control unit and the SSTRSR register. Then, set the RE bit to 1.
Data Transmission/Reception
Oct 30, 2009
26. Synchronous Serial Communication Unit (SSU)